328782289 has 16 divisors (see below), whose sum is σ = 380698560. Its totient is φ = 283140000.

The previous prime is 328782277. The next prime is 328782313. The reversal of 328782289 is 982287823.

It is not a de Polignac number, because 328782289 - 2⁹ = 328781777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328782269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18789 + ... + 31789.

It is an arithmetic number, because the mean of its divisors is an integer number (23793660).

Almost surely, 2^328782289 is an apocalyptic number.

It is an amenable number.

328782289 is a deficient number, since it is larger than the sum of its proper divisors (51916271).

328782289 is a wasteful number, since it uses less digits than its factorization.

328782289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13053 (or 13031 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 328782289 is about 18132.3547560707. The cubic root of 328782289 is about 690.1912856202.

The spelling of 328782289 in words is "three hundred twenty-eight million, seven hundred eighty-two thousand, two hundred eighty-nine".